Angel Custom G2 6.01mm Inner Barrel Series are the pinnacle of quality and performance in the Airsoft Industry. Utilizing advanced machining technology with premium grade materials, these inner barrels stand out in both quality and performance.After considerable testing and R&D, SUS304 stainless steel was chosen for its qualities that it gives to the application of barrel manufacturing. Despite its higher cost and manufacturing complexity, SUS304 stainless steel provides a degree of hardness, durability, and resilience to ensure the barrel retains its consistency and accuracy even after tens of thousands of rounds. Other qualities of SUS304 stainless steel is that it has natural scuff, corrosion, and weather resistant qualities making it easier to maintain for years of reliability. Each barrel is crafted using precision machinery; a high polish and precision crowning provide peak performance.

Compatibility / To Determining the inner barrel length you need:This barrel is designed for Tokyo Marui, WE-Tech, KJW, Socom Gear Hi-CAPA 4.3, Desert Warrior, Foliage Warrior, MEU, and other 4.3 length Airsoft Gas Blowback series. It may work for other gun models but not guaranteed by Evike.com.To determine the length you need, measure from where the magazine feed the bb to the tip of your inner barrel, or where you want your inner barrel to end. Subtract ~5mm for hopup unit. Remember, it is perfectly okay to have an inner barrel shorter than your outer barrel, or have the exposed sections hidden in a longer flashhider or mock silencer.To determine the length you need, measure from where the magazine feed the bb to the tip of your inner barrel, or where you want your inner barrel to end. Subtract ~5mm for hopup unit. Remember, it is perfectly okay to have an inner barrel shorter than your outer barrel, or have the exposed sections hidden in a longer flashhider or mock silencer.

Why 6.01mm?With the 5.99mm and 5.98mm bbs going extinct, and with present day match grade bbs being 5.88~5.95 for a better center of mass, 6.01mm became the new optimized bore for maximum range, grouping and accuracy.(BB Diameter Deviation Reference: Tokyo Marui / Excel (5.90+). KSC/Evike Japanese Spec. (5.88+). Matrix, WE, AIM Top, Madbull, Elite Force (5.90+).6.01mm barrels also provides less air volume in the barrel, resulting less air needed from the cylinder for each projection.

Inner Barrel FAQ: If you greatly increase the inner barrel of your AEG, you may want to make sure your gearbox Cylinder is adequate. (For example, if you install a 509mm inner barrel on your MP5, you may want to switch the cylinder to a full cylinder so the amount of air inside the cylinder is equivalent to your new barrel.

"178MM TM / WE HI-CAPA
I used to give my TREX 5.1 a 2 &#34;extension and it fits and works. I ordered a compensator to cover barrel. I can see a difference with my eyes, that makes it worth it. I'm sure it will Chrono higher. The BB gets across the yard faster and shoots further while keeping it pistol size. I didn't want a suppressed length pistol.

by K I S. on 09/04/2017

"(Just for reference, I bought both the 113mm and 178mm barrels but my review applies to both)
I bought this product for my KJW KP05 1911 5.1 HI-CAPA thinking that it would be the drop in fit as advertised in the description where it explicitly says &#34;This barrel is designed for Tokyo Marui, WE-Tech, KJW, Socom Gear Hi-CAPA 5.1 airsoft pistols&#34;. If you can tell where I am going with this, the barrel was obviously not a drop-in fit as KJW hop-ups have a ridge on the inside which will only house barrels with a milled indentation towards the rear of the barrel. My solution to this was to sand down my hop-up using emery metal grit sandpaper which i got from my local Lowes. Though this eventually did work, it took 3-4 hours to hand-sand (being that there is virtually no other way to remove the ridge due to the rather small nature of the hop-up).

Positives:
After installing the barrel, my pistol is now a MONSTER. I paired it with an RA Tech Maple leaf 75 degree hop-up bucking and the range and accuracy of my pistol is impeccable. I was so happy with the barrel I ended up buying a second 113mm barrel for my friend as a gift/favor.
I my opinion, there is no better barrel for the quality and price on these barrels.

Conclusion:
Just to prevent any confusion I would recommend that AC removes the KJW compatibility in the description, or at the very least mention that is may not fit in KP05's through seven as they are all very similar in hop-up construction. In the end though I am very happy with my purchase.

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